Gets the global CPU usage extended information for this system. This gets
one set of combined (“rolled up”) statistics for all hosts. It is not to be
confused with get_all_cpu_usage_extended_information, which gets all
individual cpu usage statistics, one for each host.

#release_lock ⇒ Object

Attempts to release loc with specified name. These locs can be used to
synchronize work of multiple clients working with this device. This call
returns immediately. Nothing will happen if specified loc doesn't
exist.